| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] is required for | 151 |
|
| 2 | [noun] [conj] is required | 88 |
|
| 3 | [conj] is required for | 30 |
|
| 4 | [noun] [conj] is for | 14 |
|
| 5 | [noun] [conj] required for | 7 |
|
